深抽井新型助抽设备增效机理及优化设计方法  

Research on Efficiency Enhancement Mechanism and Optimal Design Method of New Pumping Equipment in Deep Well

作　　者：智勤功[1] 周娜[1] ZHI Qin-gong;ZHOU Na(Petroleum Engineering Technology Research Institute of Shengli Oilfield Company, Sinopec, Dongying 257000, China)

机构地区：[1]中国石化胜利油田分公司石油工程技术研究院,东营257000

出　　处：《科学技术与工程》2020年第31期12782-12788,共7页Science Technology and Engineering

摘　　要：由于存在冲程损失大、泵漏失严重等现象,深抽井有杆抽油系统泵效过低的问题较为突出。实践证明,井下分级助抽器能够有效提升深抽井泵效,但其具体增效机理即主控因素尚不明确,并缺乏有效的优化设计方法。针对上述问题,从分级助抽器增效机理入手,探究各机理的主控因素,构建相应的数学模型,并建立分级助抽器优化设计方法,确定合理参数。分析表明,分级助抽器能够有效降低冲程损失、控制泵漏失量,而分级助抽器间距、直径、气液比、冲程冲次等因素均会影响其增效效果,建议助抽器间距为40~60 m,与油管间隙为1~2 mm。研究结果为深抽井的提产增效提供了依据。Due to the large stroke loss and serious pump leakage,low pump efficiency of the rod pumping system in deep pumping wells is prominent.Practice proves that the downhole graded pumping aid can improve the pumping efficiency of deep wells.However,the efficiency-enhancing mechanism and the main control factors are not clear,and the effective optimization design methods are still needed.To solve the above problems,the efficiency enhancing mechanism of graded pumping aids was investigated,the main control factors were explored,the corresponding mathematical models were constructed,and the optimal design method was established to determine reasonable parameters.The analysis shows that the graded pumping aids can effectively reduce the stroke loss and control the pump leakage,and the factors such as its distance,diameter,gas-liquid ratio,stroke and speed affect the efficiency.The recommended distance between the pumping aids is 40~60 m,and the clearance between the pump and the oil pipe is 1~2 mm.The results provide a basis to increase production and efficiency of deep wells.

关 键 词：深抽井 有杆抽油系统 泵效 冲程损失 泵漏失 

分 类 号：TE355.5[石油与天然气工程—油气田开发工程]